Author: marius
Date: Thu Oct 14 21:34:53 2010
New Revision: 213868
URL: http://svn.freebsd.org/changeset/base/213868
Log:
- In the spirit of r212559 add a comment describing what will eventually
lower the PIL.
- Just as with the AP ensure that the (S)TICK timer(s) are in a known
state when starting BSPs.
Modified:
head/sys/sparc64/sparc64/mp_machdep.c
Modified: head/sys/sparc64/sparc64/mp_machdep.c
==============================================================================
--- head/sys/sparc64/sparc64/mp_machdep.c Thu Oct 14 21:30:13 2010
(r213867)
+++ head/sys/sparc64/sparc64/mp_machdep.c Thu Oct 14 21:34:53 2010
(r213868)
@@ -433,6 +433,12 @@ cpu_mp_bootstrap(struct pcpu *pc)
*/
cache_enable(pc->pc_impl);
+ /*
+ * Clear (S)TICK timer(s) (including NPT) and ensure they are stopped.
+ */
+ tick_clear(pc->pc_impl);
+ tick_stop(pc->pc_impl);
+
/* Lock the kernel TSB in the TLB. */
pmap_map_tsb();
@@ -445,7 +451,11 @@ cpu_mp_bootstrap(struct pcpu *pc)
/* Initialize global registers. */
cpu_setregs(pc);
- /* Enable interrupts. */
+ /*
+ * Enable interrupts.
+ * Note that the PIL we be lowered indirectly via sched_throw(NULL)
+ * when fake spinlock held by the idle thread eventually is released.
+ */
wrpr(pstate, 0, PSTATE_KERNEL);
smp_cpus++;
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